Square D | MA263001021 | Circuit Breaker | 300A | 2-Pole | 600V

The Square D MA263001021 circuit breaker is a robust 300 A, 2-pole device designed to deliver reliable overcurrent protection for demanding electrical systems. Rated for 600 V, this breaker is built to handle the high-current needs of commercial and light industrial environments while maintaining clear interruption performance when faults occur.

Ideal for maintenance, retrofit, and replacement projects where exact specifications matter, this model serves as a precise fit for applications requiring a 300 A, 2-pole, 600 V protection solution. Using the correct part number MA263001021 helps ensure compatibility and safe operation within your panel or load center.

Key specifications

• Amperage: 300 A
• Poles: 2-Pole
• Voltage: 600 V

Why this MA263001021 matters

Part number MA263001021 is your best reference for compatibility with Square D panels and load centers. Before ordering, confirm fit and ratings to guarantee a seamless replacement or retrofit that maintains proper protection levels and system reliability.

Ideal for

• Facilities managing high-demand electrical loads that require a 300 A, 2-pole, 600 V breaker
• Maintenance teams replacing failed or worn-out breakers in Square D installations
• Retrofit projects where upgrading protection with a precise 300 A, 2-pole model is warranted

Use cases and practical scenarios

• Replacing a blown or worn-out 300 A breaker in a commercial or light industrial panel
• Upgrading panel protection during a retrofit to meet revised electrical requirements
• Installing a compliant main/disconnect in systems that require 600 V service with robust current protection

Installation and compatibility tips

• Always verify the panel model and labeling to ensure the MA263001021 is an allowed replacement type for your specific Square D panel or load center
• Confirm that the service and conductor ratings align with a 600 V, 300 A protection device before installation
• Keep the part number MA263001021 handy as the primary reference when cross-checking compatibility during ordering

With the Square D MA263001021 circuit breaker, you gain a dependable, high‑capacity protection solution that integrates smoothly into established Square D ecosystems, helping you maintain safety, reliability, and uptime across your electrical infrastructure.